7. Which of the following represents the largest mass?

A. 2.0 x 10 mg B. 0.0010 kg C. 1.0 x 105 ng D. 2.0 x 102 cg E. 10.0 Kg

ok

100,000 0020

0.00

10kg = 10 x 1000 = 10,000g

Explanation:

To know the quantity with the largest mass, we have to express all the units in grams:

for: 2 x 10mg = 2 x 10 x 10⁻³ = 0.02g

0.001kg = 0.001 x 1000 = 1g

1 x 10⁵ng = 1 x 10⁵ x 10⁻⁹ = 0.0001g

2 x 10²cg = 2 x 10² x 10⁻² = 2g

10kg = 10 x 1000 = 10,000g

Note:

10⁻ ¹ deci (d)

10⁻² centi (c)

10⁻³ milli (m)

10⁻⁹ nano (n)

10³ kilo (k)